JPH0667346A - Polyester-based photographic substrate - Google Patents

Abstract

PURPOSE:To obtain a photographic substrate not causing uneven coating with an emulsion by preventing the deterioration of the planeness of a film after heat treatment when a polyester-based photographic filmlike substrate is heat- treated so as to reduce its curling tendency. CONSTITUTION:A polyester-based photographic substrate is heat-treated at a temp. between 50 deg.C and the glass transition temp. in the state of a bulk roll. This substrate has a thickness pattern satisfying the conditions of 8mum or a smaller TD R value (1) as the difference between the max. and min. in the entire transverse direction, 10mum or a smaller MD R value (2) as the difference between the max. and min. within 5m length in the longitudinal direction, 8mum or a smaller MD variation (3) as the difference between adjacent peak and valley and 5mum or a smaller TD base line value (4) as the max. on the base line along the mean value of the thicknesses of both edges.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a polyester-type photographic support which does not easily curl when heated and does not impair the flatness of the film and does not cause uneven coating when an emulsion is applied. It is about.

[0002]

Photographic light-sensitive materials are generally prepared by coating at least one photographic light-sensitive layer on a plastic film support. This plastic film as a photographic support is generally a fiber-based polymer represented by triacetyl cellulose (hereinafter referred to as "TAC") and polyethylene terephthalate (hereinafter referred to as "P").
A polyester-based polymer represented by "ET") is used. Further, recently, polyethylene naphthalate, which is more heat resistant than PET, has been investigated.

Generally, photographic light-sensitive materials include those in the form of sheets and those in the form of rolls such as X-ray film, plate-making film and cut film. A typical roll film is 35
A color film or a black-and-white negative film, which is stored in a cartridge with a width of mm or less, and which is loaded into a general camera and used for photographing, can be mentioned.

Conventionally, TA has been mainly used for roll films.
A support made of C film is used. The characteristics of the TAC film as a photographic support are that it has no optical anisotropy and high transparency, and that it has excellent properties in decurling after development processing. The excellent property for decurling comes from the molecular structure of the TAC film. That is, the TAC film has a relatively high water absorbency as a plastic film, and since the molecular chain can be fluidized by the water absorption in the developing process, the curl curl which has been stored over time in the wound state as a roll film, This can be solved by causing rearrangement in the immobilized molecular chain.

On the other hand, in a photographic light-sensitive material using a film having no curling curl eliminating property, when it is used in a roll state, it is scratched in a printing step for forming an image on photographic printing paper after development. However, there are problems such as occurrence of blur, defocus, and jamming during transportation. By the way, the use of photographic light-sensitive materials has been diversified in recent years, and the film transportation at the time of shooting has been increased, the shooting magnification has been increased, and the size of the shooting apparatus has been significantly reduced. For that purpose, a support for a photographic light-sensitive material is required to have properties such as strength, dimensional stability and thinning.

However, since the TAC film has a rigid molecular structure, the film quality of the film after film formation is fragile,
At present, there are difficulties in using these applications.

[0007]

On the other hand, the polyester film has been considered as a substitute for the TAC film because it has excellent productivity, mechanical strength and dimensional stability. By the way, polyester film is
In the roll form widely used as a photographic light-sensitive material, curl curl strongly remains, so the handling property after development processing is poor, and although it has the above excellent properties, it is difficult to use as a roll film, which is a problem. there were. As a means for solving the problem of curling curl, it is known that the curl is reduced by heating the film according to US Pat. No. 4,141,735. However, if the bulk roll is simply heated on an industrial scale, winding, tackiness, and wrinkles occur, resulting in uneven coating when the emulsion is coated, which cannot be practically used. The purpose of the present invention is to
Another object of the present invention is to provide a polyester-based photographic support having good flatness and having less curling curl when heat-treated.

[0008]

An object of the present invention is to provide a polyester photographic support which is less likely to have curl curl when heat-treated at a temperature of 50 ° C. or higher and a glass transition temperature or lower in a bulk roll state. , Its thickness pattern satisfies the following conditions. (1) Max-Min in the full width direction; TD R value 8 μm or less (2) Max-Min with a length of 5 m in length direction; MD R value 10 μm or less (3) Thickness difference between adjacent peaks and valleys; MD fluctuation 8 μm or less ( 4) With the average of the thicknesses at both ends as the baseline, the maximum value of the convex portion from this baseline; TD baseline value 5 μm or less The technical significance of these conditions (1) to (4) is as illustrated in FIG. 1. The condition (1) is that the value obtained by subtracting the minimum height Min from the maximum height Max in the entire width direction on the surface of the photographic support of the polyester film is the TDR value, and the value is 8 μm or less. That is. Similarly, the condition (2) is that the maximum height M on the surface of the support in the length direction is 5 m.
A value obtained by subtracting the minimum height Min from ax is defined as an MDR value, and the value is 10 μm or less.
The condition (3) is that the difference in thickness between adjacent peaks and troughs is "MD fluctuation" regardless of the width direction and the length direction of the support,
That is, the value is 8 μm or less. Also,
The condition (3) is that the average of the thicknesses at both ends of the support is used as a base line, and the maximum value of the convex portion from this base line is set as a “TD base line value”, and the value is 8 μm or less.

In view of these conditions (1) to (4), the surface of the photographic support is extremely smooth and the thickness thereof is extremely uniform. By using the support, a support having no curl and having good flatness can be obtained when heat-treated,
It is possible to achieve an extremely excellent effect that uneven coating does not occur when an emulsion is applied to it.

The polyester photographic support used in the present invention is a polymer obtained by polycondensation of a dibasic carboxylic acid or its ester derivative and a glycol mainly composed of ethylene glycol, and has transparency, dimensional stability of the film, Other polymers and additives may be added to the extent that the mechanical strength is not impaired, or two or more dibasic acids or two or more glycols may be copolymerized or two or more polyesters may be blended. Good.

The polyester of the present invention is formed from a diol and a dicarboxylic acid, and usable dibasic acids are terephthalic acid, isophthalic acid, phthalic acid, phthalic anhydride, succinic acid, glutaric acid, adipic acid, Sebacic acid, succinic anhydride, maleic acid, fumaric acid, maleic anhydride, itaconic acid, citraconic anhydride, tetrahydrophthalic anhydride, diphenylene p, p'-dicarboxylic acid, tetrachlorophthalic anhydride, 3,6-endomethylene Tetrahydrophthalic anhydride, 1,4-cyclohexanedicarboxylic acid,

[0012]

[Chemical 1]

[0013]

[Chemical 2]

And the like. Usable diols include ethylene glycol, 1,3-propanediol, 1,2-propanediol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol and 1,7-heptane. Diol, 1,8-octanediol, 1,10-decanediol, 1,12-
Dodecanediol, 1,4-cyclohexanediol,
1,4-cyclohexanedimethanol, 1,3-cyclohexanediol, 1,1-cyclohexanedimethanol, catechol, resorcin, hydroquinone, 1,4
-Benzenedimethanol,

[0015]

[Chemical 3]

[0016]

[Chemical 4]

And the like. Further, if necessary, a monofunctional or trifunctional or higher polyfunctional hydroxyl group-containing compound or acid-containing compound may be copolymerized. In addition, the polyester of the present invention may be copolymerized with a compound having a hydroxyl group and a carboxyl group (or an ester thereof) at the same time in the molecule.

The following may be mentioned as examples of such compounds.

[0019]

[Chemical 5]

Among the polyesters composed of these diols and dicarboxylic acids, more preferred are polyethylene, 2,6-dinaphthalate (PEN), polyacrylate (PAr), polycyclohexanedimethanol terephthalate (PCT) and the like. Homopolymer and dicarboxylic acid 2,6-naphthalenedicarboxylic acid (NDCA), terephthalic acid (TPA), isophthalic acid (IPA), orthophthalic acid (OPA), cyclohexanedicarboxylic acid (CHDC), paraphenylenedicarboxylic acid (PPDC) ), As a diol, ethylene glycol (EG), cyclohexanedimethanol (CHD
M), neopentyl glycol (NPG), bisphenol A (BPA), biphenol (BP), and parahydroxybenzoic acid (PHB) as a hydroxycarboxylic acid.
A), 6-hydroxy-2-naphthalenecarboxylic acid (H
NCA) is copolymerized. More preferred among these are copolymers of 2,6-naphthalenedicarboxylic acid, terephthalic acid and ethylene glycol (mixing molar ratio of naphthalenedicarboxylic acid and terephthalic acid is 0.3: 0.7 to 1: 0). Is preferable, and 0.5: 0.5 to 0.8: 0.2 is more preferable.), A copolymer of terephthalic acid, ethylene glycol and bisphenol A (mixing molar ratio of ethylene glycol and bisphenol A is 0.6: It is preferably between 0.4 and 0: 1.0, and more preferably between 0.5: 0.5 and 0.1: 0.9.
Is preferred. ), Isophthalic acid, para-phenylenedicarboxylic acid, a copolymer of terephthalic acid and ethylene glycol (isophthalic acid; the molar ratio of para-phenylenedicarboxylic acid is 0.1 to 1 when terephthalic acid is 1).
0.0, 0.1 to 20.0, and more preferably 0.2 to 5.0 and 0.2 to 10.0, respectively, naphthalenedicarboxylic acid, and a copolymer of neopentyl glycol and ethylene glycol (neo). The molar ratio of pentyl glycol and ethylene glycol is 1: 0 to 0.7: 0.3.
Is preferable, and more preferably 0.9: 0.1 to 0.6:
0.4), terephthalic acid, a copolymer of ethylene glycol and biphenol (the molar ratio of ethylene glycol and biphenol is preferably 0: 1.0 to 0.8: 0.2, more preferably 0.1: 0.9). ~ 0.7: 0.3
Is. ), Para-hydroxybenzoic acid, a copolymer of ethylene glycol and terephthalic acid (the molar ratio of para-hydroxybenzoic acid, ethylene glycol is 1: 0 to 0.1:
0.9 is preferable, and 0.9: 0.1 is more preferable.
0.2: 0.8) and other copolymers and PEN and PET
(A composition ratio of 0.3: 0.7 to 1.0: 0 is preferable, and 0.
5: 0.5 to 0.8: 0.2 is more preferable), PET
And PAr (composition ratio of 0.6: 0.4 to 0: 1.0 is preferable, and 0.5: 0.5 to 0: 0.9 is more preferable).

PEN (polyethylene 2,6-dinaphthalate) is the most balanced of these polyesters, has a mechanical strength, especially a high elastic modulus, and has a glass transition temperature of 120 ° C. which is sufficiently high. . However, it has the drawback of emitting fluorescence. On the other hand, PCT has a high mechanical strength and a glass transition temperature as high as around 110 ° C., but has a disadvantage that it is difficult to obtain a transparent film because the crystallization rate is extremely high. PAr has the highest glass transition temperature (190 ° C.) of these polymers, but has a drawback that mechanical strength is weaker than that of PET. Therefore, in order to make up for these drawbacks, blends of these polymers or copolymers of the monomers forming them can be used.

These homopolymers and copolymers can be synthesized according to conventionally known methods for producing polyesters. For example, when the acid component is directly esterified with the glycol component, or when a dialkyl ester is used as the acid component, first, the transesterification reaction with the glycol component is performed, and this is heated under reduced pressure to remove the excess glycol component. By doing so, it can be synthesized. Alternatively, the acid component may be an acid halide and reacted with glycol. At this time, if necessary, a transesterification reaction catalyst, a polymerization reaction catalyst, or a heat resistance stabilizer may be added. Regarding these polyester synthesis methods, for example, Polymer Experimental Science Vol. 5, "Polycondensation and Polyaddition" (Kyoritsu Shuppan, 1980), pp. 103-136.
Page, "Synthetic Polymer V" (Asakura Shoten, 1971), 18th
It can be performed with reference to the descriptions on pages 7 to 286.

Further, Japanese Patent Publication No. 4040414 and Japanese Patent Laid-Open No. 50
-81325, JP-A-50-109715, JP-A-1-
287129, JP-A-1-266130, JP-A1-2
66133, JP-A-55-115425, JP-A-1-
244446, JP-A-4-93937, etc. can be referred to. The preferred average molecular weight range for these polyesters is about 10,000 to 500,000.

Polymer blends of the polymers thus obtained are disclosed in JP-A-49-5482 and 64-64.
4325, JP-A-3-192718, Research Disclosure 283, 739-41, 284, 779.
-82, 294, 807-14, it can be easily formed. Further, in order to improve the adhesiveness with other polyesters, these polyesters may be partially blended with other polyesters, or the monomers constituting the other polyesters may be copolymerized, or In addition, a monomer having an unsaturated bond can be copolymerized and radically crosslinked.

As the polyester type photographic support used in the present invention, DET and polyethylene naphthalate, polycyclohexanedimethanol terephthalate,
Polyarylate and blends thereof, with polyethylene naphthalate being particularly preferred. Further, various additives can be contained in the polyester film of the present invention.

One of the properties which poses a problem when the polyester film is used as a support for a photographic light-sensitive material is a problem of fogging due to the high refractive index of the support. The refractive index of polyester film is 1.6-
The refractive index of gelatin used exclusively for the subbing layer and the photographic emulsion layer is 1.50 to 1.55.
Is. The ratio of the refractive index to gelatin is less than 1, and when light enters from the film edge, it is easily reflected at the interface between the base and the emulsion layer. Therefore, the polyester film is a so-called light piping phenomenon (flickering).
Easy to cause.

In the present invention, in order to avoid such a light piping phenomenon, a dye which does not increase the film haze can be added. The dye used is not particularly limited, but is preferably a dye having a gray color tone due to the general property of the light-sensitive material, and also has excellent heat resistance in the film forming temperature range of the polyester film and has compatibility with polyester. Excellent ones are preferred. As a specific dye, from the above viewpoint, Diaresi manufactured by Mitsubishi Kasei
n, Kayase manufactured by Nippon Kayaku, and the like. The dyeing density is required to be at least 0.01 or more, preferably 0.03 or more, as measured by a Macbeth color densitometer.

Further, an ultraviolet absorber may be kneaded into these polymer films for the purpose of preventing fluorescence and imparting stability with time. It is desirable that the ultraviolet absorber has no absorption in the visible region, and the addition amount thereof is usually 0.01% by weight to 2% based on the weight of the polymer film.
It is 0% by weight, preferably about 0.05% to 1.0% by weight. As the ultraviolet absorber, 2,4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-n-octoxybenzophenone, 4-dodecyloxy-2-hydroxybenzophenone, 2,2 ', 4. 4'-tetrahydroxybenzophenone, 2,2'-dihydroxy-4,4'-
Benzophenone series such as dimethoxybenzophenone, 2
(2'-hydroxy-5-methylphenyl) benzotriazole, 2 (2'-hydroxy-3 ', 5'-di-t
-Butylphenyl) benzotriazole, 2 (2'-hydroxy-3'-di-t-butyl-5'-methylphenyl) benzotriazole and other benzotriazoles, phenyl salicylate, salicylate-based UV absorbers such as methyl salicylate Can be mentioned.

These UV absorbers may be added to the undercoat or backing layer, the emulsion layer or the antihalation layer. It is also possible to impart slipperiness to the polyester film depending on the application. The slipperiness imparting means is not particularly limited, but kneading with an inert inorganic compound, coating a surfactant, or the like is generally used. Also, a method using an internal particle system in which a catalyst or the like added during the polyester polymerization reaction is precipitated can be used.

The inert inorganic compound is SiO ₂ ,
Examples thereof include TiO ₂ , BaSO ₄ , CaCO ₃ , talc, kaolin and the like. Since transparency is an important requirement for a support for a photographic light-sensitive material, SiO ₂ having a refractive index relatively close to that of polyester film, or an internal particle system capable of relatively reducing the precipitated particle size is selected. It is desirable to do.

In the case of imparting slipperiness by kneading, a method of laminating a layer imparted with a function in order to obtain more transparency of the film is also preferably used. Specific examples include a co-extrusion method using a plurality of extruders and feed blocks, or a multi-manifold die. When the polyester is formed into a film, the polymerized polyester may be subjected to the film forming step in a molten state, or may be once formed into pellets and then subjected to the film forming step. When pelletized, it is preferably dried before extrusion.

For film forming, melt extrusion and biaxial stretch forming methods are preferable. That is, at a melting point or higher and 350 ° C. or lower, melt extrusion is performed on a rotating cooling body to form an amorphous amorphous sheet,
Then, it is roll-stretched at 70 to 160 ° C., preferably 80 to 130 ° C. in the longitudinal direction by 2.0 to 5.0 times, preferably 2.2 to 4.0 times, and then in the transverse direction at 70 to 150 ° C., preferably Is stretched at a temperature of 80 to 130 ° C. and a temperature higher than that at the time of longitudinal stretching by 2.0 to 5.0 times, preferably 2.2 to 4.0 times, and then transverse stretching temperature or more and 260 ° C. or less, preferably 150. Heat set at ~ 250 ° C or less, then 0.1
It is relaxed by 10%, preferably 0.5-5%, then cooled and wound. For the stretching, simultaneous biaxial stretching of the tenter clip system is also preferably used. It is also possible to carry out longitudinal stretching again after transverse stretching.

The thickness of the polyester film used in the present invention is preferably 60 to 90 μm. In the present invention, the glass transition temperature and the thickness pattern are measured as follows. [Glass transition temperature] [Tg] Using a differential thermal analyzer (DSC), sample film 10
When an endothermic peak appears in the arithmetic mean temperature or Tg of the temperature at which deviation starts from the baseline and the temperature at which the baseline returns to a new baseline when the temperature of mg is raised at 20 ° C / min in a helium nitrogen stream, this The temperature showing the maximum value of the endothermic peak is defined as Tg. [Thickness pattern] Measured at a speed of 600 mm / min using an electronic micrometer manufactured by Anritsu Electric Co., Ltd.
After recording on chart paper at 0 and chart speed of 30 mm / min, measure with a ruler and round to the first decimal place.

The knurling in the present invention was carried out by the method disclosed in Japanese Patent Publication No. 57-36129. The polyester film of the present invention can be subjected in advance to various surface treatments such as corona discharge treatment, chemical treatment and fire treatment in order to improve the adhesiveness and the wettability of the coating liquid. Among these surface treatments, the corona discharge treatment that is most preferably used in the present invention is the one in which the deposition of the low-polymerization product on the film surface is small.

The polyester support of the present invention preferably has a subbing layer in order to increase the adhesive strength with a photographic layer such as a photosensitive layer coated thereon. As the subbing layer, a subbing layer using a polymer latex made of a styrene-butadiene-based copolymer or a vinylidene chloride-based copolymer,
There is a subbing layer that uses a hydrophilic binder such as gelatin.

The subbing layer preferably used in the present invention is a subbing layer using a hydrophilic binder. Examples of the hydrophilic binder used in the present invention include water-soluble polymers, cellulose esters, latex polymers and water-soluble polyesters. Examples of the water-soluble polymer include gelatin, gelatin derivatives, casein, agar, sodium alginate, starch, polyvinyl alcohol, polyacrylic acid copolymers, maleic anhydride copolymers, etc., and carboxymethyl cellulose as a cellulose ester,
Hydroxyethyl cellulose and the like. Examples of the latex polymer include vinyl chloride-containing copolymers, vinylidene chloride-containing copolymers, acrylic acid ester-containing copolymers, vinyl acetate-containing copolymers and butadiene-containing copolymers. Of these, gelatin is the most preferable.

As the compound for swelling the support used in the present invention, resorcin, chlorresorcin, methylresorcin, o-cresol, m-cresol, p-cresol, phenol, o-chlorophenol, p-chlorophenol, di-resin. Examples include chlorophenol, trichlorophenol, monochloroacetic acid, dichloroacetic acid, trifluoroacetic acid, and chloral hydrate. Of these, resorcin and p-chlorophenol are preferred.

Various gelatin hardeners can be used in the subbing layer of the present invention. As a gelatin hardening agent, chromium salts (chromium alum, etc.), aldehydes (formaldehyde, glutaraldehyde, etc.), isocyanates, active halogen compounds (2,4-dichloro-6-hydroxy-S-triazine, etc.), epichlorohydrin resin And so on.

The subbing layer of the present invention comprises SiO ₂ , Ti.
Inorganic fine particles such as O ₂ or polymethylmethacrylate copolymer fine particles (1 to 10 μm) can be contained as a matting agent. The undercoat layer according to the present invention can be applied by a generally well-known coating method, for example, a dip coating method, an air knife coating method, a curtain coating method, a wire bar coating method, a gravure coating method, an extrusion coating method or the like. Is.

The light-sensitive material of the present invention may have a non-light-sensitive layer such as an anti-halation layer, an intermediate layer, a back layer and a surface protective layer in addition to the light-sensitive layer. The binder for the back layer may be a hydrophobic polymer or a hydrophilic polymer used in the underlayer. The back layer of the light-sensitive material of the present invention may contain an antistatic agent, a slip agent, a matting agent, a surfactant, a dye and the like. The antistatic agent used in the back layer of the present invention is not particularly limited, and examples of the anionic polymer electrolyte include polymers containing a carboxylic acid, a carboxylic acid salt and a sulfonic acid salt, for example, JP-A-48-22017. Issue, Japanese Patent Publication No. 46-24
159, JP-A-51-30725 and JP-A-51-1.
29216 and Japanese Patent Application Laid-Open No. 55-95942. Examples of the cationic polymer include JP-A-49-121523 and JP-A-48-911.
65 and Japanese Patent Publication No. 49-24582. In addition, ionic surfactants are also anionic and cationic. For example, JP-A-49-85826.
No. 49,33630, US Pat. No. 2,992,10
8, US 3,206,312, JP-A-48-87826.
Issue, Japanese Examined Patent Publication No. 49-11567, Japanese Examined Patent Publication No. 49-1156
No. 8, JP-A-55-70837 and the like can be mentioned.

The most preferable antistatic agent for the back layer of the present invention is ZnO, TiO ₂ , SnO ₂ or Al _2.
O ₃ , In ₂ O ₃ , SiO ₂ , MgO, BaO, MoO
It is fine particles of at least one crystalline metal oxide selected from the group ₂ or a composite oxide thereof. The fine particles of the conductive crystalline oxide or the composite oxide thereof used in the present invention have a volume resistivity of 10 ⁷ Ωcm or less, more preferably 10 ⁵ Ωcm or less. The particle size is preferably 0.01 to 0.7 µ, and more preferably 0.02 to 0.5 µ.

Regarding the method for producing the fine particles of the conductive crystalline metal oxide or composite oxide used in the present invention, JP-A-56-143430 and JP-A-60-258541.
In the specification of the issue. First, a method in which metal oxide fine particles are produced by firing, and heat treatment is performed in the presence of a heteroatom to improve conductivity, and secondly, different method for improving conductivity when producing metal oxide fine particles by firing. A method of making atoms coexist, a third method of introducing oxygen defects by lowering the oxygen concentration in the atmosphere when producing metal fine particles by firing, and the like are easy. Examples of containing different kinds of atoms include Al, In, etc. for ZnO, Nb, Ta, etc. for TiO ₂ , Sb, Nb, halogen elements, etc. for SnO ₂ . The addition amount of the heteroatom is 0.01 to
The range of 30 mol% is preferable, but 0.1 to 10 mol%
If so, it is particularly preferable.

Next, the photographic layer of the photographic light-sensitive material of the present invention will be described. The most preferable photographic light-sensitive material of the present invention is a silver halide photographic light-sensitive material, and examples thereof include a silver halide color negative film, a color positive film, a color reversal film and a black-and-white negative film. The photographic emulsion used in the present invention is P.I. Gl
afkides Chemie of Physiq
ue Photographique (Paul Mo
ntel, 1967), G.N. F. Duffin Photographic Emulsion Che
mistry (published by The Focal Press, 1
966), V.I. L. Zclickan el al Making and Coating Photo
graphic Emulsion (TheFoca
l Press, 1964) and the like. That is, any of an acidic method, a neutral method, an ammonia method and the like may be used, and as a method of reacting a soluble silver salt and a soluble halogen salt, any of a one-sided mixing method, a simultaneous mixing method and a combination thereof may be used. .

A method of forming grains in the presence of excess silver ions (so-called reverse mixing method) can also be used. As one form of the simultaneous mixing method, a method of keeping pAg constant in a liquid phase in which silver halide is produced, that is, a so-called controlled double jet method can be used. According to this method, a silver halide emulsion having a regular crystal form and a substantially uniform grain size can be obtained.

Two or more kinds of silver halide emulsions formed separately may be mixed and used. In the process of silver halide grain formation or physical ripening, a cadmium salt, a zinc acid, a lead salt, a thallium salt, an iridium salt or a complex salt thereof, a rhodium salt or a complex salt thereof, an iron salt or an iron complex salt may be present together. As the binder or protective colloid for the photographic emulsion, it is advantageous to use gelatin, but other hydrophilic colloids can be used.

For example, gelatin derivatives, graft polymers of gelatin and other polymers, proteins such as albumin and casein; cellulose derivatives such as hydroxyethyl cellulose, carboxymethyl cellulose and cellulose sulfates, sugar derivatives such as sodium alginate and starch derivatives. Polyvinyl alcohol, polyvinyl alcohol partial acetal, poly-N-vinylpyrrolidone, polyacrylic acid, polymethacrylic acid, polyacrylamide,
Various synthetic hydrophilic polymer substances such as a single or copolymer such as polyvinyl imidazole and polyvinyl pyrazole can be used.

Examples of gelatin include lime-processed gelatin, acid-processed gelatin and Bull. Soc. Sci. Ph
ot. Japan. No. The enzyme gelatin as described in pages 16, 30 (1966) may be used, and
A hydrolyzate or an enzymatic degradate of gelatin can also be used. As the gelatin derivative, gelatin is reacted with various compounds such as acid halides, acid anhydrides, isocyanates, bromoacetic acid, alkane sultones, vinyl sulfonamides, maleinimide compounds, polyalkylene oxides and epoxy compounds. What is obtained is used. Specific examples thereof are US Pat. Nos. 2,614,928 and 3
No. 132945, No. 3186846, No. 331255
3, British Patents 861414, 1033189,
No. 1005784 and Japanese Patent Publication No. 42-26845.

As the gelatin graft polymer, a homopolymer or copolymer of vinyl monomers such as acrylic acid, methacrylic acid, derivatives thereof such as esters and amides, acrylonitrile, styrene and the like are grafted onto gelatin. What was made to use can be used. In particular, a graft polymer with a polymer having a certain degree of compatibility with gelatin, for example, a copolymer of acrylic acid, methacrylic acid, acrylamide, methacrylamide, hydroxyalkyl methacrylate and the like is preferable.
Examples of these are U.S. Pat.
67, 2956884 and the like.

Typical synthetic hydrophilic polymer substances are, for example, West German Patent Application (OLS) 2312798, US Pat. Nos. 3,620,751 and 3,879,205, and Japanese Patent Publication No. 43-.
No. 7561. The photographic emulsion used in the present invention may contain various compounds for the purpose of preventing fog during the production process of the light-sensitive material, during storage or during photographic processing or stabilizing photographic performance. That is, azoles such as benzothiazolium salts, nitroindazoles, nitrobenzimidazoles, chlorobenzimidazoles, bromobenzimidazoles, mercaptothiazoles, mercaptobenzothiazoles, mercaptobenzimidazoles, mercaptothiadiazoles, aminotriazoles. , Benzotriazoles, nitrobenzotriazoles, mercaptotetrazoles (particularly 1-phenyl-5-mercaptotetrazole), etc .; mercaptopyrimidines; mercaptotriazines; thioketo compounds such as oxazolinethione; azaindenes, for example triazaindene , Tetraazaindenes (especially 4-hydroxy-substituted (1,3,3a, 7) tetraazaindenes), pentaazaindene Etc.; benzenethiosulfonate,
Many compounds known as antifoggants or stabilizers can be added, such as benzenesulfinic acid, benzenesulfonic acid amide, and the like. For example, US Patent 395
No. 4474, No. 3982947, Japanese Patent Publication No. 52-286
No. 60 can be described.

In the photographic emulsion layer of the photographic light-sensitive material of the present invention, for the purpose of increasing sensitivity, increasing contrast, or promoting development,
For example, polyalkylene oxide or its derivative such as ether, ester, amine, thioether compound, thiomorpholine, quaternary ammonium salt compound, urethane derivative, urea derivative, imidazole derivative, 3-pyrazolidones and the like may be included. US Patent 2400
No. 532, No. 2423549, No. 2716062,
No. 3617280, No. 3772021, No. 3808
It is possible to use those described in, for example, No. 003 and British Patent No. 1488991.

The photographic emulsions used in the present invention may be spectrally sensitized with methine dyes and the like. Dyes used include cyanine dyes, merocyanine dyes, complex cyanine dyes, complex merocyanine dyes, holopolar cyanine dyes, hemicyanine dyes, styryl dyes, and hemioxonol dyes. Particularly useful dyes are those belonging to the cyanine dyes, merocyanine dyes and complex merocyanine dyes. Any of the nuclei normally used for cyanine dyes as a basic heterocyclic nucleus can be applied to these dyes.

That is, a pyrroline nucleus, an oxazoline nucleus,
Thiazoline nuclei, pyrrole nuclei, oxazole nuclei, thiazole nuclei, selenazole nuclei, imidazole nuclei, tetrazole nuclei, pyridine nuclei; nuclei in which alicyclic hydrocarbon rings are fused to these nuclei; and aromatic hydrocarbon rings in these nuclei Fused, i.e., indolenine nucleus, benzindolenine nucleus, indole nucleus, benzoxazole nucleus, naphthoxazole nucleus, benzothiazole nucleus, naphthothiazole nucleus, benzoselenazole nucleus, benzimidazole nucleus,
A quinoline nucleus or the like can be applied. These nuclei may be substituted on carbon atoms.

In the merocyanine dye or the complex merocyanine dye, as a nucleus having a ketomethylene structure, a pyrazolin-5-one nucleus, a thiohydantoin nucleus, a 2-thiooxazolidine-2,4-dione nucleus, a thiazolidine-2,4-
A 5-6 membered heterocyclic nucleus such as a dione nucleus, a rhodanine nucleus or a thiobarbituric acid nucleus can be applied. Useful sensitizing dyes are, for example, German Patent 929080 and US Patent 22.
No. 31658, No. 2493748, No. 2503776
No. 251901, No. 2912329, No. 36
56959, 3672897, and 3694217.
No. 4,025,349, No. 4,046,572, British Patent No. 1,242,588, Japanese Patent Publication No. 44-14030, No. 5
2-24844.

These sensitizing dyes may be used alone or in combination, and the combination of sensitizing dyes is often used particularly for the purpose of supersensitization. Typical examples thereof are US Pat. Nos. 2,688,545 and 2,977,229,
No. 3397060, No. 3522052, No. 3527
No. 641, No. 3617293, No. 3628964,
No. 3666480, No. 3672898, No. 3679
No. 428, No. 3703377, No. 3769301,
No. 3814609, No. 3837862, and No. 4026
No. 707, British Patent Nos. 1344281 and 150780.
No. 3, Japanese Patent Publication No. 43-4936, No. 53-12375.
No. 5, JP-A Nos. 52-110618 and 52-10992.
No. 5 is described.

Along with the sensitizing dye, a dye having no spectral sensitizing effect itself or a substance which does not substantially absorb visible light and exhibits supersensitization may be contained in the emulsion. For example, aminostilbene compounds substituted with a nitrogen-containing heterocyclic ring group (for example, those described in US Pat. Nos. 2,933,390 and 3,635,721), aromatic organic acid formaldehyde condensed rings (for example, those described in US Pat. No. 3,743,510). , A cadmium salt, and an azaindene compound may be included. US Pat. Nos. 3,615,613 and 36
15641, 3617295, 3635721
The combinations described in item No. are particularly useful.

The light-sensitive material produced by using the present invention may contain a water-soluble dye in the hydrophilic colloid layer as a filter dye or for various purposes such as prevention of irradiation. Such dyes include oxonol dyes, hemioxonol dyes, styryl dyes, merocyanine dyes,
Cyanine dyes and azo dyes are included. Of these, oxonol dyes; hemioxonol dyes and merocyanine dyes are useful. Specific examples of dyes that can be used include US Pat.
84609, 1177429, JP-A-48-85.
No. 130, No. 49-99620, No. 49-11442.
No. 0, No. 52-108115, and US Pat. No. 227478.
No. 2, No. 2533472, No. 2956879, No. 3
148187, 31777078, 324712
No. 7, No. 3540887, No. 3575704, No. 3
653905, 3718472, and 407131.
No. 2 and No. 4070362.

In the light-sensitive material produced by using the present invention, the photographic emulsion layer and other hydrophilic colloid layers may contain a stilbene-based, triazine-based, oxazole-based or coumarin-based brightening agent. These water-soluble whitening agents may be used, or a water-insoluble whitening agent may be used in the form of a dispersion. Specific examples of optical brighteners are disclosed in US Pat. No. 26327.
No. 01, No. 3269840, No. 3359102, British Patent No. 852075, No. 1319763, and the like.

In carrying out the present invention, the following known anti-fading agents may be used in combination, and the color image stabilizers used in the present invention may be used alone or in combination of two or more kinds.
Known anti-fading agents include, for example, US Pat. No. 2,360.
No. 290, No. 2418613, No. 2675314,
2701197, 2704713, 2728
No. 659, No. 2732300, No. 2735765,
No. 2,710,801, No. 2,816,028, British Patent 1
Hydroquinone derivatives described in 363921 and the like,
Gallic acid derivatives described in US Pat. Nos. 3,457,079 and 3,069,262, US Pat. No. 2,735,766,
No. 3698909, Japanese Patent Publication No. Sho 49-20977, No. 5
2-6623, p-alkoxyphenols, U.S. Pat. Nos. 3,432,300 and 3,573,050;
No. 3,574,629, No. 3,764,337, and JP-A-52.
No. 35633, No. 52-147434, No. 52-1
There are p-oxyphenol derivatives described in No. 52225, bisphenols described in US Pat. No. 3,700,455, and the like.

The light-sensitive material produced by using the present invention may contain a hydroquinone derivative, an aminophenol derivative, a gallic acid derivative, an ascorbic acid derivative and the like as a color fog preventing agent, specific examples of which are US Pat. No. 23602.
No. 90, No. 2336327, No. 2403721, No. 2418613, No. 2675314, No. 27011.
97, 2704713, 27286559, 2732300, 2735766, and JP-A-50-.
No. 92988, No. 50-92989, No. 50-939.
No. 28, No. 50-110337, No. 52-14523.
No. 5, Japanese Patent Publication No. 50-23813 and the like.

The present invention is also applicable to multilayer multicolor photographic materials having at least two different spectral sensitivities on the support. Multilayer natural photographic materials usually have at least one red-sensitive emulsion layer, one green-sensitive emulsion layer, and one blue-sensitive emulsion layer on a support. The order of these layers can be arbitrarily selected as required.
It is usual to include a cyan-forming coupler in the red-sensitive emulsion layer, a magenta-forming coupler in the green-sensitive emulsion layer, and a yellow-forming coupler in the blue-sensitive emulsion layer, but different combinations can be used in some cases.

The most preferable light-sensitive material of the present invention is a roll-shaped color negative film for photographing. Any known color coupler can be preferably used in the color negative film of the present invention. That is, it may contain a compound (hereinafter abbreviated as a coupler) which reacts with an oxidation product of an aromatic amine (usually primary amine) developing agent to form a dye. The coupler is preferably a non-diffusing coupler having a hydrophobic group called a ballast group in the molecule. The coupler may be either 4-equivalent or 2-equivalent with respect to silver ion.
Further, a colored coupler having a color correcting effect or a coupler releasing a development inhibitor upon development (so-called DIR coupler) may be contained. The coupler may be such that the product of the coupling reaction is colorless.

As the yellow color-forming coupler, a known homologous ketomethylene type coupler can be used. Among these, benzoylacetanilide compounds and bivaloylacetanilide compounds are advantageous. Specific examples of the yellow color-forming coupler which can be used include US Pat. Nos. 2,875,057 and 32,655.
No. 06, No. 3408194, No. 3551155, No. 3582322, No. 3725072, No. 38914.
45, West German Patent 1547868, West German Application Publication 22
No. 19917, No. 2261361, No. 2414006
No., British Patent No. 142520, Japanese Patent Publication No. 51-1078
3, JP-A-47-26133 and 48-73147.
No. 51, No. 51-102636, No. 50-6341, No. 50-123342, No. 50-130442, No. 5
1-21827, 50-87650, 52-8
No. 2424, No. 52-115219 and the like.

As the magenta color coupler, a pyrazolone compound, an indazone compound, a cyanoacetyl compound or the like can be used, and the pyrazolone compound is particularly advantageous. Specific examples of the magenta color forming coupler that can be used include U.S. Pat. Nos. 2,600,788 and 2,983,608.
No. 3062653, No. 3127269, No. 3311
No. 476, No. 3419391, No. 3519429,
No. 3,558,319, No. 3,582,322, and No. 3615.
No. 506, No. 3834908, No. 3891445,
West German Patent 1810464, West German Patent Application (OLS) 2
No. 408665, No. 2417945, No. 241895
No.9, No. 2424467, Japanese Patent Publication No. 40-6031,
JP-A Nos. 51-20826, 52-58922, 49-129538, 49-74027 and 50.
No. 159336, No. 52-42121, No. 49-7.
No. 4028, No. 50-60233, No. 51-2654
No. 1 and No. 53-55122.

As the cyan color forming coupler, a phenol compound, a naphthol compound or the like can be used. Specific examples thereof are US Pat. Nos. 2,369,929 and 24.
34272, 2474293, and 2521908.
No. 2,895,826, No. 3034892, No. 33
No. 11476, No. 3458315, No. 3476663
No. 3583971, No. 3591383, No. 37
67411, 4004929, West German patent application (O
LS) 2414830, 2454329, JP-A-48-59838, 51-26034, 48-.
No. 5055, No. 51-146828, No. 52-696.
No. 24 and No. 52-90932.

Colored couplers include, for example, US Pat. Nos. 3,476,560, 2,521,908 and 30,34.
No. 892, Japanese Patent Publication No. 44-2016, No. 38-2233.
No. 5, No. 42-11304, No. 44-32461,
Those described in JP-A-51-26034, JP-A-52-42121, and West German Patent Application (OLS) 2418959 can be used.

Examples of DIR couplers include US Pat. Nos. 3,227,554, 3,617,291 and 3,701.
783, 3790384, 3632345,
West German Patent Application (OLS) 2414006, 2454
No. 301, No. 2454329, British Patent 953454
No. 52-69624 and 49-122335.
And those described in JP-B-51-16141 can be used.

In addition to the DIR coupler, a compound which releases a development inhibitor upon development may be contained in the light-sensitive material. For example, US Pat. Nos. 3,297,445 and 33,795.
No. 29, West German Patent Application (OLS) 241794, JP-A-52-15271, and JP-A-53-9116 can be used. Two or more of the above couplers can be contained in the same layer. The same compound may be contained in two or more different layers.

[0068] These couplers are generally silver 2 × 10 ^-3 not per moles 5 × 10 ^-1 mol of the emulsion layer, is preferably added 1 × 10 ^-2 to 5 × 10 ^-1 mol. To introduce the above coupler into the silver halide emulsion layer, a known method such as the method described in US Pat. No. 2,322,027 can be used. For example, phthalic acid alkyl ester (dibutyl phthalate, dioctyl phthalate, etc.),
Phosphate esters (diphenyl phosphate, triphenyl phosphate, tricresyl phosphate, dioctyl butyl phosphate), citrate esters (eg acetyl citrate tributyl), benzoate esters (eg octyl benzoate), alkyl amides (eg Diethyl lauryl amide), fatty acid esters (eg dibutoxyethyl succinate, dioctyl azelate), etc., or boiling point about 30 ° C to 150 ° C
Of the organic solvent such as lower alkyl acetates such as ethyl nitrate and butyl acetate, ethyl propionate, secondary butyl alcohol, methyl isobutyl ketone, β-ethoxyethyl acetate, methyl cellosolve acetate, etc., and then dispersed in a hydrophilic colloid. It The high boiling point organic solvent and the low boiling point organic solvent may be mixed and used.

Also, Japanese Patent Publication No. 51-39853 and Japanese Patent Application Laid-Open No. 51-39853.
The dispersion method using a polymer described in -59953 can also be used. When the coupler has an acid group such as carboxylic acid or sulfonic acid, it is introduced into the hydrophilic colloid as an alkaline aqueous solution. The light-sensitive material produced by using the present invention may contain an ultraviolet absorber in the hydrophilic colloid layer. Benzotriazole compounds substituted with, for example, aryl groups (eg, US Pat. No. 3,533,794)
No. 4), a 4-thiazolidone compound (for example, those described in U.S. Pat. Nos. 3,314,794 and 3,352,681), and a benzophenone compound (for example, Japanese Patent Laid-Open No. 46-46242).
No. 2784) and cinnamic acid ester compounds (for example, US Pat. Nos. 3,705,805 and 370737).
5), a butadiene compound (for example, those described in US Pat. No. 4,045,229), or a benzooxyzole compound (for example, those described in US Pat. No. 3,700,545) can be used. Further, those described in US Pat. No. 3,499,762 and JP-A-54-48535 can be used. Ultraviolet absorbing couplers (for example, α-naphthol type cyan dye forming couplers) and ultraviolet absorbing polymers may be used. These UV absorbers may be mordanted in a specific layer.

Any known method can be used for photographic processing of the light-sensitive material of the present invention. A known treatment liquid can be used. Treatment temperatures are usually chosen between 18 ° C and 50 ° C, but temperatures below 18 ° C or 5
The temperature may exceed 0 ° C. Depending on the purpose, either development processing for forming a silver image (black photographic processing) or color photographic processing including development processing for forming a dye image can be applied.

The color developing solution generally comprises an alkaline aqueous solution containing a color developing agent. Color developing agents are known general aromatic amine developers such as phenylenediamines (eg 4-amino-N, N-diethylaniline, 3-
Methyl-4-amino N, N-diethylaniline, 4-amino-N-ethyl-N-β-hydroxyethylaniline, 3-methyl-4-amino-N-ethyl-N-β-hydroxyethylaniline, 3- Methyl-4-amino-N
-Ethyl-N-β-methanesulfoamidoethylaniline, 4-amino-3-methyl-N-ethyl-N-β-methoxyethylaniline and the like) can be used.

In addition, L. F. A. Mason Pho
toographic Procheming Chemi
pages 226 to 229, published by Focal Press, 1966, US Pat.
For example, those described in JP-A No. 92364 and JP-A-48-64933 may be used. The color developer may further contain a pH buffering agent such as alkali metal sulfite, carbonate, borate and phosphate, a development inhibitor or an antifoggant such as bromide, iodide and an organic antifoggant. it can. If necessary, a water softener, a preservative such as hydroxylamine, an organic solvent such as benzyl alcohol and diethylene glycol, a polyethylene glycol, a quaternary ammonium salt, a development accelerator such as an amine, a dye-forming coupler, a competitive coupler, sodium. Fogging agents such as polo hydride, auxiliary developing agents such as 1-phenyl-3-pyrazolidone, viscosity imparting agents, US Pat. No. 4,083,723.
Published in Germany (O
The antioxidant described in LS) 2262950 may be included.

The photographic emulsion layer after color development is usually bleached. The bleaching process may be performed simultaneously with the fixing process or may be performed individually. As a bleaching agent, iron (II
I), cobalt (III), chromium (IV), copper (I
Compounds of polyvalent metals such as I), peracids, quinones, nitroso compounds and the like are used. For example, ferricyanide, dichromate, iron (III) or cobalt (I
II) organic complex salts such as ethylenediaminetetraacetic acid,
Use aminopolycarboxylic acids such as nitrilotriacetic acid and 1,3-diamino-2-propanoltetraacetic acid or complex salts of organic acids such as citric acid, tartaric acid and phosphoric acid; persulfates, permanganates; nitrosophenol, etc. You can Of these, ethylenediaminetetraacetic acid iron (II
I) Sodium and iron ethylenediaminetetraacetate (II
I) A weakly oxidizing bleaching solution containing ammonium,
Even in a bleach-fixing solution, the coupler of the present invention exhibits a large color forming property, which is also advantageous in this respect. The ethylenediaminetetraacetic acid iron (III) complex salt is advantageous both in the stand-alone bleaching solution and in the one-bath bleach-fixing solution.

For bleaching or bleach-fixing solutions, US Pat.
No. 42520, No. 3241966, Japanese Patent Publication No. 45-85
No. 06, Japanese Patent Publication No. 45-8836, etc., bleaching accelerators, thiol compounds described in JP-A No. 53-65732, and various other additives can also be added.

[0075]

In the present invention, unlike the conventional film-like support, the polyester film-like support having a remarkably good flatness is used, so that the flatness is excellent even after the heat treatment, and therefore the photosensitive film obtained therefrom is obtained. It is thought that the material has no curl, but this point has not been theoretically proved and is within the scope of speculation. Further, since the film after heat treatment has a good flatness, when an emulsion is applied to the film to form a photosensitive layer, uneven coating of the emulsion does not occur, whereby a high quality image can be formed.

[0076]

EXAMPLES The present invention will be specifically described below with reference to examples. However, the present invention is not limited to this embodiment. Example 1 1) Types of support (polyester film) and heat treatment Various polyester films made of the materials shown in Tables 1 to 6 below and having the thickness patterns shown therein, which are bulk rolls. Using rolls, the films of Tables 1 to 3 are subjected to heat treatment under the heat treatment conditions shown in Tables 1 to 3, and the flatness (presence or absence of wrinkles, stickiness, etc.) after heat treatment is confirmed and the following 2) undercoat Coating of Layers The following treatments were performed, and the films of Tables 4 to 6 were subjected to the following 2) coating of the undercoat layer and 3) coating of the back layer without heat treatment, followed by 4). Heat treatment was performed.

When the polyester support is biaxially stretched, if the length is smaller than 3 times or larger than 3.5 times, or if the width is smaller than 3.5 times or larger than 4.2 times, for photographic use. The strength was insufficient as a support. Similarly, when the thickness of the support was less than 60 μm, the strength was insufficient.

[0078]

[Table 1]

[0079]

[Table 2]

[0080]

[Table 3]

[0081]

[Table 4]

[0082]

[Table 5]

[0083]

[Table 6]

2) Coating of Undercoat Layer After subjecting each of the supports to corona discharge treatment on both surfaces thereof, an undercoat liquid having the following composition was applied to form an undercoat layer. For the corona discharge treatment, a solid state corona treatment machine 6KVA model manufactured by Pillar Co. is used, and a 30 cm wide support is treated at 20 m / min. From the current and voltage readings at this time, the object to be treated was treated at 0.375 KV · A · min / m ² . The discharge frequency during the treatment was 9.6 KHz, and the electrode-dielectric roll gap clearance was 1.6 mm. (Composition of undercoat liquid) Gelatin 3 g Distilled water 250 cc Sodium α-sulfodi-2-ethylhexyl succinate 0.05 g Formaldehyde 0.02 g 3) Application of back layer What is the side of the support after the undercoat is provided with the undercoat layer? A back layer having the following composition was applied on the opposite surface. 3-1) Preparation of conductive fine particle dispersion liquid (tin oxide-antimony oxide composite dispersion liquid): 230 parts by weight of stannic chloride hydrate and 23 parts by weight of antimony trichloride were added to 300 parts of ethanol.
It was dissolved in 0 part by weight to obtain a uniform solution. A 1N aqueous sodium hydroxide solution was added dropwise to this solution until the pH of the solution became 3, to obtain a coprecipitate of colloidal stannic oxide and antimony oxide. The coprecipitate obtained is left at 50 ° C. for 24 hours,
A reddish brown colloidal precipitate was obtained.

The reddish brown colloidal precipitate was separated by centrifugation. To remove excess ions, water was added to the precipitate and washed by centrifugation. This operation was repeated 3 times to remove excess ions. Colloidal precipitate from which excess ions have been removed 2
00 parts by weight was redispersed in 1500 parts by weight of water, and sprayed in a baking furnace heated to 600 ° C. to obtain a bluish average particle size of 0.2
A fine powder of tin oxide-antimony oxide composite having a size of μm was obtained. The specific resistance of this fine particle powder was 25 Ω · cm.

A mixed solution of 40 parts by weight of the fine particle powder and 60 parts by weight of water was adjusted to pH 7.0, roughly dispersed with a stirrer, and then
Horizontal sand mill (trade name: Dyno Mill; WILLYA.I)
It was prepared by dispersing with BACHOFENAG) until the residence time reached 30 minutes. 3-2) Preparation of back layer: The following formulation [A] was applied so that the dry film thickness was 0.3 μm, and dried at 115 ° C. for 60 seconds. The coating solution (B) for coating layer described below was further applied onto this so that the dry film thickness would be 0.1 μm, and the coating solution at 115 ° C.
Dry for minutes. [Formulation A] 10 parts by weight of the conductive fine particle dispersion liquid 1 part by weight gelatin 1 part by weight water 27 parts by weight methanol 60 parts by weight resorcin 2 parts by weight polyoxyethylene nonylphenyl ether 0.01 part by weight [coating layer coating solution (B)] Cellulose triacetate 1 part by weight Acetone 70 parts by weight Methanol 15 parts by weight Dichloromethylene 10 parts by weight p-Chlorophenol 4 parts by weight 4) Heat treatment of the support For the films of Tables 4 to 6, the undercoat layer and the backing layer were prepared by the above method. After applying the layer, under the conditions shown in Tables 4 to 6,
Heat treatment was performed. All the heat treatments were carried out with the core having a diameter of 30 cm and the outer surface of the undercoat surface wound. The flatness (presence or absence of wrinkles, stickiness, etc.) after the heat treatment was confirmed. The results are shown in Tables 3-4. 5) Coating of light-sensitive layer A multilayer color light-sensitive material was prepared by applying multiple layers of a core layer having the following composition on each support obtained by the above method. (Photosensitive layer composition) The main materials used for each layer are classified as follows; ExC: Cyan coupler UV: UV absorber ExM: Magenta coupler HBS: High boiling point organic solvent ExY: Yellow coupler H: Gelatin Curing agent ExS: Sensitizing dye The numbers corresponding to the respective components indicate the coating amount expressed in g / m ² , and for silver halide, the coating amount in terms of silver. However, with respect to the sensitizing dye, the coating amount is shown in mol unit per mol of silver halide in the same layer. (Sample 101) First layer ((Antihalation layer) Black colloidal silver Silver 0.18 Gelatin 1.40 ExM-1 0.18 ExF-1 2.0 × 10 ⁻³ HBS-1 0.20 Second layer ( Intermediate layer) Emulsion G Silver 0.065 2,5-di-t-pentadecylhydroquinone 0.18 ExC-2 0.020 UV-1 0.060 UV-2 0.080 UV-3 0.10 HBS-1 0.10 HBS-2 0.020 Gelatin 1.04 Third layer (low-sensitivity red-sensitive emulsion layer) Emulsion A Silver 0.25 Emulsion B Silver 0.25 ExS-1 6.9 × 10 ^-5 ExS-21 .8 × 10 ⁻⁵ ExS-3 3.1 × 10 ⁻⁴ ExC-1 0.17 ExC-3 0.030 ExC-4 0.10 ExC-5 0.020 ExC-7 0.0050 ExC-8 0 0.010 Cpd-2 0.025 HBS 1 0.10 Gelatin 0.87 Fourth Layer (medium-sensitivity red-sensitive emulsion layer) Emulsion D silver ^{0.70 ExS-1 3.5 × 10 -4} ExS-2 1.6 × 10 -5 ExS-3 5. 1 × 10 ⁻⁴ ExC-1 0.13 ExC-2 0.060 ExC-3 0.0070 ExC-4 0.090 ExC-5 0.025 ExC-7 0.0010 ExC-8 0.0070 Cpd-2 0.023 HBS-1 0.10 Gelatin 0.75 Fifth layer (high-sensitivity red-sensitive emulsion layer) Emulsion E Silver 1.40 ExS-1 2.4 × 10 ⁻⁴ ExS-2 1.0 × 10 ⁻⁴ ExS-3 3.4 × 10 ⁻⁴ ExC-1 0.12 ExC-3 0.045 ExC-6 0.020 ExC-8 0.025 Cpd-2 0.050 HBS-1 0.22 HBS-20 .10 Gelatin 1.20 Sixth layer (intermediate layer) Cpd-1 .10 HBS-1 0.50 Gelatin 1.10 7th layer (low sensitivity green-sensitive emulsion layer) Emulsion C silver ^{0.35 ExS-4 3.0 × 10 -5} ExS-5 2.1 × 10 -4 ExS -6 8.0 x 10 ^-4 ExM-1 0.010 ExM-2 0.33 ExM-3 0.086 ExY-1 0.015 HBS-1 0.30 HBS-3 0.010 Gelatin 0.73 No. Eight layers (medium-sensitivity green-sensitive emulsion layer) Emulsion D Silver 0.80 ExS-4 3.2 × 10 ⁻⁵ ExS-5 2.2 × 10 ⁻⁴ ExS-6 8.4 × 10 ⁻⁴ ExM-20 .13 ExM-3 0.030 ExY-1 0.018 HBS-1 0.16 HBS-3 8.0 × 10 ^-3 gelatin 0.90 9th layer (high-sensitivity green-sensitive emulsion layer) Emulsion E Silver 1. 25 ExS-4 3.7 × 10 ⁻⁵ ExS-5 8.1 × 10 ⁻⁵ ExS-6 3.2 × 10 ⁻⁴ E xC-1 0.010 ExM-1 0.030 ExM-4 0.040 ExM-5 0.019 Cpd-3 0.040 HBS-1 0.25 HBS-2 0.10 Gelatin 1.44 10th layer ( Yellow filter layer) Yellow colloidal silver 0.030 Cpd-3 0.16 HBS-1 0.60 Gelatin 0.60 11th layer (low sensitivity blue sensitive emulsion layer) Emulsion C Silver 0.18 ExS-7 8.6 × 10 ^-4 ExY-1 0.020 ExY-2 0.22 ExY-3 0.50 ExY-4 0.020 HBS-1 0.28 Gelatin 1.10 12th layer (medium-sensitivity blue-sensitive emulsion layer) Emulsion D Silver 0.40 ExS-7 7.4 × 10 ⁻⁴ ExC-7 7.0 × 10 ⁻³ ExY-2 0.050 ExY-3 0.10 HBS-1 0.050 Gelatin 0.78 13th layer (High-sensitivity blue-sensitive emulsion ) Emulsion F silver ^{1.00 ExS-7 4.0 × 10 -4} ExY-2 0.10 ExY-3 0.10 HBS-1 0.070 Gelatin 0.86 14th layer (first protective layer) Emulsion G Silver 0.20 UV-4 0.11 UV-5 0.17 HBS-1 5.0 × 10 ^-2 Gelatin 1.00 Fifteenth layer (second protective layer) H-1 0.40 B-1 (diameter 1.7 μm) 5.0 × 10 ^-2 B-2 (diameter 1.7 μm) 0.10 B-3 0.10 S-1 0.20 gelatin 1.20 Further, the storability and processability of each layer are appropriately adjusted. , Pressure resistant, mildew-proof
To improve antibacterial property, antistatic property and coating property W-
1 to W-3, B-4 to B-6, F-1 to F
-17 compound and iron salt, lead salt, gold salt, platinum salt, iridium salt and rhodium salt are contained.

The composition of the emulsion used in each layer is shown below.

[0088]

[Table 7]

In Table 7, (1) Emulsions A to F were reduction-sensitized at the time of grain preparation using thiourea dioxide and thiosulfonic acid according to the examples of JP-A-2-191938. (2) Emulsions A to F were subjected to gold sensitization, sulfur sensitization and selenium sensitization in the presence of the spectral sensitizing dye described in each photosensitive layer and sodium thiocyanate according to the examples of JP-A-3-237450. Has been done. (3) For the preparation of tabular grains, low molecular weight gelatin is used according to the examples of JP-A-1-158426. (4) Dislocation lines as described in JP-A-3-237450 have been observed in tabular grains and normal crystal grains having a grain structure using a high voltage electron microscope.

The chemical formulas of the compounds used for coating the photosensitive layer are shown below.

[0091]

[Chemical 6]

[0092]

[Chemical 7]

[0093]

[Chemical 8]

[0094]

[Chemical 9]

[0095]

[Chemical 10]

[0096]

[Chemical 11]

[0097]

[Chemical 12]

[0098]

[Chemical 13]

[0099]

[Chemical 14]

[0100]

[Chemical 15]

[0101]

[Chemical 16]

[0102]

[Chemical 17]

[0103]

[Chemical 18]

[0104]

[Chemical 19]

[0105]

[Chemical 20]

Development Processing The development processing conditions are as follows. Treatment process Temperature Time Color development 38 ° C 3 minutes Stop 38 ° C 1 minute Washing with water 38 ° C 1 minute Bleaching 38 ° C 2 minutes Washing with water 38 ° C 1 minute Fixing 38 ° C 2 minutes Washing with water 38 ° C 1 minute Stabilization bath 38 ° C The treatment liquid used for 1 minute has the following composition. Color developer Caustic soda 2g Sodium sulfite 2g Potassium bromide 0.4g Sodium chloride 1g Hoh sand 4g Hydroxylamine sulfate 2g Ethylenediaminetetraacetic acid disodium dihydrate 2g 4-Amino-3-methyl-N-ethyl-N- (β -Hydroxyethyl) aniline monosulfate) 4g Water is added to a total volume of 1 liter Stop solution Sodium thiosulfate 10g Ammonium thiosulfate (70% aqueous solution) 30 ml Acetic acid 30 ml Sodium acetate 5 g Potassium alum 15 g Water is added to a total volume of 1 liter Liquid Ethylenediaminetetrairon (III) acetate sodium dihydrate 100 g Potassium bromide 50 g Ammonium nitrate 50 g Horic acid 5 g Ammonia water Adjusting pH to 5.0 Total volume of water added 1 liter Fixing solution Sodium thiosulfate 150 g Sulfurous acid Soda 15g Hog sand 12g Glacial acetic acid 15ml Potassium alum 20g Water added to a total amount of 1 liter Stabilized bath Folic acid 5g Sodium citrate 5g Sodium metaphorate 3g Potassium alum 15g Water added to a total amount of 1 liter The coating unevenness of the multilayer color photographic light-sensitive material obtained as described above was investigated. The results are shown in Tables 1-6.

According to Tables 1 to 6, in Examples 1 to 9 and 10 to 18 of the present invention, the flatness after the heat treatment was good and there was no coating unevenness in the emulsion coating. In Comparative Examples 1 to 16 and 17 to 32 in which at least one value of the two conditions is not within the range of the present invention, the flatness after the heat treatment is poor and the coating unevenness of the emulsion coating occurs.

[0108]

EFFECT OF THE INVENTION The polyester photographic support according to the present invention is coated with an emulsion without causing curling curl and impairing the flatness of the film in a heat treatment at a temperature of 50 ° C. or higher and a glass transition temperature or lower in a bulk roll state. It did not become uneven. This polyester-based photographic support is
It has superior mechanical strength compared to TAC, and can significantly reduce the thickness of the film, and it can be expected to have a sufficient effect on future miniaturization of cameras and patrones.

[Brief description of drawings]

FIG. 1 shows an explanatory view of conditions of a thickness pattern in a polyester photographic support of the present invention.

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Claims (8)

[Claims] 1. A photographic support which is heat-treated at a temperature of 50 ° C. or higher and a glass transition temperature or lower in the state of a bulk roll, and has a thickness pattern satisfying the following conditions. Support. (1) Max-Min in the full width direction; TD R value 8 μm or less (2) Max-Min with a length of 5 m in length direction; MD R value 10 μm or less (3) Thickness difference between adjacent peaks and valleys; MD fluctuation 8 μm or less ( 4) Taking the average of the thicknesses at both ends as the base line, the maximum value of the convex portion from this base line; 2. The polyester-based photographic support according to claim 1, wherein the polyester-based photographic support is provided with an undercoat and a backing. 3. The polyester-based photographic support according to claim 1, wherein the polyester-based photographic support is polyethylene terephthalate and its derivative or polyethylene naphthalate and its derivative. 4. A polyester photographic support is 2,6-
2. The polyester photographic support according to claim 1, which is a polyester obtained by reacting naphthalenedicarboxylic acid or dimethyl 2,6-naphthalenedicarboxylic acid with a glycol mainly containing ethylene glycol. 5. A polyester-based photographic support has a longitudinal length of 3.0.
5. The polyester photographic support according to claim 4, wherein the polyester photographic support is biaxially stretched to a stretch ratio of 3.5 times and a width of 3.5 to 4.2 times. 6. The polyester photographic support according to claim 1, wherein the polyester photographic support is knurled. 7. The polyester photographic support according to claim 5, wherein the knurled thickness is 5 μm to 50 μm thicker than the average thickness of the bulk roll. 8. The thickness of the polyester photographic support is 6
The polyester photographic support according to claim 1, which has a thickness of 0 μm to 90 μm.